Guest visualpoet Posted May 26, 2004 Report Share Posted May 26, 2004 http://www.corollacustomz.com/modules.php?name=Forums&file=viewtopic&t=14317#151143 Am I correct in thinking that this guy SuperTuner might not be the first person to help you work on your car? Venting your gas cap for a slight performance boost? Come on. Do you get some free HP adding stickers when you do it? Quote Link to comment Share on other sites More sharing options...
desperado Posted May 26, 2004 Report Share Posted May 26, 2004 He's right on part of it.. THe reason for the tank to NOT be vented is emisions related, but unless you are sucking assloads of fuel from the tank, and you are not getting enough flow, then venting your tank would help. But only then. Quote Link to comment Share on other sites More sharing options...
Guest powers Posted May 26, 2004 Report Share Posted May 26, 2004 question, the guy made the comment that a vacuum is created by the pump. I was thinking about this and it seemed to me that the only way gas could shoot out is if the contents are under pressure from changes in temp. So question my qustion is, are the contents under pressure or a vaccum? If they were under pressure wouldn't that help the pump? Quote Link to comment Share on other sites More sharing options...
desperado Posted May 26, 2004 Report Share Posted May 26, 2004 yes, you are right. When I said that it would help, that would only be effective if you were sucking it down at a gallon a minute, run of the mill talks are under pressure, mostly because gas, does have a low point of vaporazation, sort of like boiling point. And it is also sort of like pop, shake it and it will give off gases. But the system is presureized to stop emmisions, and to a small degree to keep the aromatic solvents (read Octane) in the fuel, which is the first thing to boil off. Quote Link to comment Share on other sites More sharing options...
Guest visualpoet Posted May 26, 2004 Report Share Posted May 26, 2004 It's funny that he could be accurate on a few things and so far off on the rest of it. Just goes to show you can't always trust someone because they sound like they know their shit. Quote Link to comment Share on other sites More sharing options...
Clifford Automotive Posted May 27, 2004 Report Share Posted May 27, 2004 well, seems to me that all gas tanks are vented know matter what you drive. Quote Link to comment Share on other sites More sharing options...
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